2017届高考英语考前冲刺：强化必考重点句型_高考复习指南

2017届高考英语考前冲刺：强化必考重点句型

　　句型7 …before…特殊用法(1)"没来得及……就……"

　　[例句] The roof fell before he had time to dash into the room to save his baby. 他还没有来得及冲进房间救孩子，房顶就塌了。 He ran off before I could stop him. 我还没有来得及阻止，他已经跑了。 To my great disappointment, my favorite singer left the concert before I could have a word with her. 让我非常失望的是，我还没有来得及和我最喜欢的歌手打招呼，她就已经离开了。

　　句型8 …before…特殊用法(2)"过了多久才……"或"动作进行到什么程度才……"

　　[例句] They walked about fifty miles to the west before they saw a village. 他们西行50英里才看到一个村庄。 The workers worked day and night about three days before everything returned to normal. 工人们连续工作3天才使一切恢复正常。 He almost knocked me down before he knew it. 他几乎撞到我了才意识到。 We had walked a long way before we found some water. 我们走了很长的路才找到一点水。 Five years went by before I knew it. 不知不觉，五年过去了。

　　句型9 It was + 时间段+before…."过了多久才(怎么样)……" It was not long before…."不久，就……" It will (not) be +时间段+before…."要过多久(不久)……才……"(before从句谓语动词要用一般时态)

　　[例句] It was not long before he sensed the danger of the position.不久他就意识到他处境的危险。 It was five days before he came back. 五天后他才回来。 It will be half a year before you graduate from the school. 再过半年你才能毕业。 It will not be long before they understand each other. 他们大概不久就会互相了解。